/* css/main.css */
:root {
    /* Color Palette */
    --color-sun-50: #fffbeb;
    --color-sun-100: #fef3c7;
    --color-sun-500: #f59e0b;
    --color-sun-600: #d97706;
    --color-sun-900: #78350f;
    
    --color-health-50: #f0fdf4;
    --color-health-200: #bbf7d0;
    --color-health-600: #16a34a;
    --color-health-800: #166534;
    
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-500: #64748b;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;
    
    --color-danger-50: #fef2f2;
    --color-danger-200: #fecaca;
    --color-danger-600: #dc2626;
    --color-danger-800: #991b1b;

    /* Typography */
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    
    /* Layout */
    --container-max: 1152px;
    --border-radius: 12px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-gray-50);
    color: var(--color-gray-800);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

.hidden {
    display: none !important;
}

/* Header */
.main-header {
    background-color: #ffffff;
    border-bottom: 1px solid var(--color-gray-200);
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.25rem;
    color: var(--color-gray-900);
}

.icon-sun {
    width: 32px;
    height: 32px;
    color: var(--color-sun-500);
}

.main-nav ul {
    display: flex;
    gap: 24px;
    list-style: none;
}

.main-nav a {
    text-decoration: none;
    color: var(--color-gray-500);
    font-weight: 500;
    transition: color 0.2s;
}

.main-nav a:hover {
    color: var(--color-sun-600);
}

/* Footer */
.main-footer {
    background-color: var(--color-gray-900);
    color: var(--color-gray-300);
    padding: 32px 0;
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-brand p {
    font-size: 0.75rem;
    color: var(--color-gray-500);
    margin-top: 4px;
}

.footer-copy {
    font-size: 0.875rem;
}